RCE in Verbb Formie

CVE-2026-45697

Formie is a Craft CMS plugin for creating forms. Prior to 2.2.20 and 3.1.24, unauthenticated users could submit crafted values into Hidden fields (with Default value → Custom) that were evaluated as Twig during submission handling, which could lead to serious compromise of the Craft site (depending on template/sandbox behavior). This vulnerability is fixed in 2.2.20 and 3.1.24.

Vulnerability class: RCE (Remote Code Execution)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (40.3th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-45697: held from 0.005 to 0.005.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

  • Verbb Formie — versions < 2.2.20, >= 3.0.0-beta.1, < 3.1.24

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-45697?
CVE-2026-45697 is a critical-severity vulnerability in Verbb Formie, classified under Code Injection. CVSS score: 9.8/10. Published 2026-05-29.
How severe is CVE-2026-45697?
Critical severity. CVSS v3 base score is 9.8 out of 10.